Metal gears for 7x12s

[stevec]

Eeeuw!

[Brian]

At last I have found the answer.

Real Bull now make 7x? lathes with metal gears as standard.

To make the lathe smoother and to keep it quiet the gears have smaller teeth but otherwise are a direct replacement.
So I am now awaiting the post from AMADEAL in rhe UK.

Will keep you posted Brian.

[Brian]

The new gears and bearings have arrived, now I need to find the time to do the job.
The finer teeth on the gears look like a great improvement over the originals. We will see.

   

Cant wait

Brian.

[Dave J]

They look nice

Dave

[EdK]

(04-07-2013, 03:04 AM)Brian Wrote: The new gears and bearings have arrived, now I need to find the time to do the job.
The finer teeth on the gears look like a great improvement over the originals. We will see.



Cant wait

Brian.

I thought you were talking about the change gears. So those gears in the picture go in the headstock, correct?

Ed

[Brian]

(04-07-2013, 09:07 AM)EdK Wrote:

(04-07-2013, 03:04 AM)Brian Wrote: The new gears and bearings have arrived, now I need to find the time to do the job.
The finer teeth on the gears look like a great improvement over the originals. We will see.



Cant wait

Brian.

I thought you were talking about the change gears. So those gears in the picture go in the headstock, correct?

Ed

Sorry Ed if I did not make myself clear in the post .
Its old age y know

Brian.

[Brian]

At last I have managed to find the time to get on with the job.

The spindle was removed by the gentle application of a large hammer and a block of wood.
The problem bearing just behind the flange was removed with a 3 leg puller.

   

As recommended, I eased the fit of the bearing and new gear on the shaft, to allow the pre load to be set, but I did not ease the fit of the bearing directly behind the flange as I believe this must be as firm as possible.

So to fit this bearing I warmed the bearing on a hot plate until the oil just started to smoke, then dropped it onto the shaft.

   

   

A perfect fit with no problems

The gears were centralized in the head by rubbing down the spacers on
some wet / dry paper.

   

One thing worthy of a note is that the selector fork is not even, the larger part goes to the bottom.

   

I had to thin down the nuts by 1.5mm each , this was done by assembling the lathe with one nut while I machined the other.

All seems OK so I will wait to see if it makes any difference to the work

Brian